Fixes ghosts being affected by gravity.

Fixes #980

Content.Shared/GameObjects/Components/Movement/MovementIgnoreGravityComponent.cs

@@ -0,0 +1,10 @@
+using Robust.Shared.GameObjects;
+
+namespace Content.Shared.GameObjects.Components.Movement
+{
+    [RegisterComponent]
+    public sealed class MovementIgnoreGravityComponent : Component
+    {
+        public override string Name => "MovementIgnoreGravity";
+    }
+}